docs::api::Apache2::Status - Online Linux Manual PageSection : 3
Updated : 2021-01-26
Source : perl v5.32.1
Note : User Contributed Perl Documentation
NAMEApache2::Status − Embedded interpreter status information
Synopsis​ <Location /perl−status> ​ ​ # disallow public access ​ Order Deny, Allow ​ Deny from all ​ Allow from 127.0.0.1 ​ ​ SetHandler modperl ​ PerlOptions +GlobalRequest ​ PerlResponseHandler Apache2::Status ​ </Location> ​ ​ or ​ ​ <Location /perl−status> ​ ​ # disallow public access ​ Order Deny, Allow ​ Deny from all ​ Allow from 127.0.0.1 ​ ​ SetHandler perl−script ​ PerlResponseHandler Apache2::Status ​ </Location>
DescriptionThe Apache2::Status module provides some information about the status of the Perl interpreter embedded in the server. Configure like so: ​ <Location /perl−status> ​ ​ # disallow public access ​ Order Deny, Allow ​ Deny from all ​ Allow from 127.0.0.1 ​ ​ SetHandler modperl ​ PerlOptions +GlobalRequest ​ PerlResponseHandler Apache2::Status ​ </Location> Notice that under the ​"modperl" core handler the Environment menu option will show only the environment under that handler. To see the environment seen by handlers running under the ​"perl−script" core handler, configure Apache2::Status as: ​ <Location /perl−status> ​ ​ # disallow public access ​ Order Deny, Allow ​ Deny from all ​ Allow from 127.0.0.1 ​ ​ SetHandler perl−script ​ PerlResponseHandler Apache2::Status ​ </Location> Other modules can ‟plugin” a menu item like so: ​ require Apache2::Module; ​ Apache2::Status−>menu_item( ​ 'DBI' => "DBI connections", #item for Apache::DBI module ​ sub { ​ my ($r, $q) = @_; #request and CGI objects ​ my (@strings); ​ push @strings, "blobs of html"; ​ return \@strings; #return an array ref ​ } ​ ) if Apache2::Module::loaded('Apache2::Status'); ​WARNING: Apache2::Status must be loaded before these modules via the PerlModule or PerlRequire directives (or from ​startup.pl). A very common setup might be:
  Perl Module B::TerseSize ​ <Location /perl−status> ​ SetHandler perl−script ​ PerlResponseHandler Apache2::Status ​ PerlSetVar StatusOptionsAll On ​ PerlSetVar StatusDeparseOptions "−p −sC" ​ </Location> due to the implementation of Apache2::Status::noh_fileline in B::TerseSize, you must load B::TerseSize first.
Options
StatusOptionsAllThis single directive will enable all of the options described below. ​ PerlSetVar StatusOptionsAll On
StatusDumperWhen browsing symbol tables, the values of arrays, hashes and scalars can be viewed via Data::Dumper if this configuration variable is set to On: ​ PerlSetVar StatusDumper On
StatusPeekWith this option On and the Apache::Peek module installed, functions and variables can be viewed ala Devel::Peek style: ​ PerlSetVar StatusPeek On
StatusLexInfoWith this option On and the B::LexInfo module installed, subroutine lexical variable information can be viewed. ​ PerlSetVar StatusLexInfo On
StatusDeparseWith this option On subroutines can be ‟deparsed”. ​ PerlSetVar StatusDeparse On Options can be passed to B::Deparse::new like so: ​ PerlSetVar StatusDeparseOptions "−p −sC" See the B::Deparse manpage for details.
StatusTerseWith this option On, text-based op tree graphs of subroutines can be displayed, thanks to B::Terse. ​ PerlSetVar StatusTerse On
StatusTerseSizeWith this option On and the B::TerseSize module installed, text-based op tree graphs of subroutines and their size can be displayed. See the B::TerseSize docs for more info. ​ PerlSetVar StatusTerseSize On
StatusTerseSizeMainSummaryWith this option On and the B::TerseSize module installed, a ​‟Memory Usage” will be added to the Apache2::Status main menu. This option is disabled by default, as it can be rather cpu intensive to summarize memory usage for the entire server. It is strongly suggested that this option only be used with a development server running in −X mode, as the results will be cached. ​ PerlSetVar StatusTerseSizeMainSummary On
StatusGraphWhen StatusDumper is enabled, another link ‟OP Tree Graph” will be present with the dump if this configuration variable is set to ​On: ​ PerlSetVar StatusGraph This requires the B module (part of the Perl compiler kit) and ​B::Graph (version 0.03 or higher) module to be installed along with the dot program. Dot is part of the graph visualization toolkit from AT&T: http://www.graphviz.org/. ​WARNING: Some graphs may produce very large images, some graphs may produce no image if B::Graph's output is incorrect.
DotLocation of the dot program for StatusGraph, if other than /usr/bin or /usr/local/bin
GraphDirDirectory where StatusGraph should write it's temporary image files. Default is $ServerRoot/logs/b_graphs.
PrerequisitesThe Devel::Symdump module, version 2.00 or higher. Other optional functionality requirements: B::Deparse − 0.59, ​B::Fathom − 0.05, B::Graph − 0.03.
Copyrightmod_perl 2.0 and its core modules are copyrighted under The Apache Software License, Version 2.0.
See Also​perl (1), Apache (3), Devel::Symdump (3), Data::Dumper (3), B(3), ​B::Graph(3), mod_perl 2.0 documentation.
AuthorsDoug MacEachern with contributions from Stas Bekman 0
Johanes Gumabo
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